Results 21 to 30 of about 470,492 (303)

Understanding the negative thermal expansion in planar graphite–metal composites [PDF]

open access: yes, 2018
The addition of graphitic fibers and flakes as fillers is commonly used to control the thermal expansion of metals. Sintered metal matrix composites with a planar distribution of graphite flakes show a low or negative thermal expansion coefficient ...
Oddone, Valerio   +2 more
core   +1 more source

Avant-Garde Polymer and Nano-Graphite-Derived Nanocomposites—Versatility and Implications

open access: yesC, 2023
Graphite (stacked graphene layers) has been modified in several ways to enhance its potential properties/utilities. One approach is to convert graphite into a unique ‘nano-graphite’ form.
Ayesha Kausar
doaj   +1 more source

USE OF WIMS/PANTHER TO ANALYSE NITROGEN WORTH MEASUREMENTS AT THE UK FLEET OF AGRS [PDF]

open access: yesEPJ Web of Conferences, 2021
The UK fleet of Advanced Gas-Cooled Reactors (AGRs) are moderated with graphite and cooled with carbon dioxide. Each reactor consists of over 300 fuel channels with a cluster of UO2 fuel pins surrounded by graphite.
Birkett Eddie, Knight Martin
doaj   +1 more source

Evaluation and Characterization of Reduced Graphene Oxide Nanosheets as Anode Materials for Lithium-Ion Batteries

open access: yesInternational Journal of Electrochemical Science, 2013
High quality reduced graphene oxide (rGO) nanosheets were prepared from natural graphite through oxidation followed by solvothermal reduction method. The morphology, structure and composition of graphene oxide (GO) and rGO were characterized by scanning ...
Changjing Fu   +3 more
doaj   +1 more source

Correlation between the surface characteristics of carbon supports and their electrochemical stability and performance in fuel cell cathodes

open access: yesCarbon Energy, 2021
In this paper, an extensive characterisation of a range of carbon blacks (CB) with similar surface area but different surface chemistry is carried out by flow calorimetry, Raman spectroscopy, dynamic water vapour sorption, instrumental gas analysis ...
Ignacio Jiménez‐Morales   +10 more
doaj   +1 more source

Conductivity landscape of highly oriented pyrolytic graphite surface containing ribbons and edges [PDF]

open access: yes, 2005
We present an extensive study on electrical spectroscopy of graphene ribbons and edges of highly oriented pyrolytic graphite (HOPG) using atomic force microscope (AFM).
A. K. Tyagi   +10 more
core   +2 more sources

Ultraviolet-visible spectroscopy of graphene oxides

open access: yesAIP Advances, 2012
Dispersions of few-layer (1-3 layers), multi-layer (4-10 layers) and thick-layer (>10 layers) graphene oxide (GO) were prepared by a modified Hummers method with different mass ratios of KMnO4 to graphite.
Qi Lai   +4 more
doaj   +1 more source

A solvent-free Diels-Alder reaction of graphite into functionalized graphene nanosheets [PDF]

open access: yes, 2014
A solvent-free Diels-Alder reaction was carried out by heating a mixture of graphite and a typical dienophile, maleic anhydride (MA) or maleimide (MI), in a sealed glass ampoule of argon.
Baek, Jong-Beom, Seo, Jeong-Min
core   +1 more source

First-principles modeling of the interactions of iron impurities with graphene and graphite

open access: yes, 2010
Results of first principles modelling of interactions graphene and graphite with iron impurities predict the colossal difference between these two carbon allotropes.
Barzola-Quiquia   +44 more
core   +1 more source

Tribology of Graphite-Filled Polystyrene

open access: yesLubricants, 2016
Self-lubricating polymer compounds are currently used for a wide range of applications such as bearings, gears, and water meters. Under severe conditions such as high pressure, high velocity, and/or high temperatures, the material fails (PV limit).
Raffaele Gilardi
doaj   +1 more source

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